CODE PO420 & 430 LEXUS ES 330

SOURCE: How many O2 sensors on a 1997 Lexus ES 300?

according to the manual i have... it has three.... one in the exhaust manifold.... and two in the exhaust pipe..... slightly vauge on the exact location of the last two sensors... but looks like it is after the catylitic converter.

SOURCE: same problem

there is a cancel button in the glove box, check this first to make sure its not activated.

SOURCE: TRAC OFF, VSC, and check engine lights are on in my 2004 Lexus ES

Often caused by a loose gas cap or fouled or failed air fuel O2 sensor. Check your gas cap is fully ratcheted, Drive a day or two. If lights don't clear you will need a code reader attached to the car to diagnose.

SOURCE: Repalcing the main beam headlight bulb on the 2004 Lexus ES 330

The bulb is held in place by a wire capture that hooks under a small metal hook on bottom of housing. The rubber shroud or boot needs to be pulled off first to expose the bulb and intermittent socket that actually holds the bulb. To remove the bulb push the wire capture (the end that is looped) toward the front of the car and then to the side to disengage the wire from the small hook, be sure to note the position of the plastic socket that the bulb plugs into as it only fits one way.Notice the tab on the bulb base faces up. The bulb does not fit snugly in the headlight socket, it is held in place entirely by the wire catch.

SOURCE: Does the timing belt need to be replaced at 90,000

yes. This service is recommended by Toyota/Lexus which includes: timing belt, water pump, idler & tensioner pulleys, drivebelts. Typically shop cost $580-$950 depending on their labor charge dealer charges $800+.